Hi-Riders is a 1978 action

Action film

Action film is a film genre where one or more heroes is thrust into a series of challenges that require physical feats, extended fights and frenetic chases...

 film written and directed by Greydon Clark

Greydon Clark

Greydon Clark is an American film writer, director, producer, and actor. His career spans several decades and genres, although the majority of his work has been low-budget productions in the action/horror genres...

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Plot

Mark and Lynn (Darby Hinton and Diana Peterson) get caught up in a story of hatred and revenge after trying to collect on a bet with a Hi-Rider. The Hi-Riders are challenged to a drag race by one of the local hot heads and in a spectacular explosion both drivers are killed. The local boy's father vows revenge. A fantastic stunt filled chase ensures between the Hi-Riders and the local henchman. Whipped into a blazing frenzy of violence the Hi-Riders are humping hot steel hogs on a raging rampage through the town.

Release

The film was released theatrically in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 by Dimension Pictures in 1978.

The film was released on a double feature DVD

DVD

A DVD is an optical disc storage media format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. DVDs offer higher storage capacity than Compact Discs while having the same dimensions....

 with Clark's The Bad Bunch

The Bad Bunch

The Bad Bunch is an American 1973 blaxploitation drama film directed by and co-starring Greydon Clark.-Plot:The film is a study of prejudice and discrimination. It tells the story of a black gang who run the streets of Watta and of Jim, a white man, who tries to befriend them...

by VCI Home Entertainment in 2010.